7th floor, Sun Red River Building, No. 23 Phan Chu Trinh, Phan Chu Trinh Ward, Hoan Kiem District, Hanoi, S.R. Vietnam
1A, alley 3/29, Pham Tuan Tai Str., Dich Vong Hau Ward, Cau Giay Dist., Ha Noi
21st Floor, Hoa Binh Tower, 106 Hoang Quoc Viet Street, Nghia Do ward, Cau Giay District, Hanoi, Vietnam
6th Floor HCO Building (Melia) 44B Ly Thuong Kiet Street Hanoi, Vietnam
222 bis Dien Bien Phu, Vo Thi Sau Ward, District 3, Ho Chi Minh City, Viet Nam